rails/actionpack/test/template/render_test.rb

require 'abstract_unit'
require 'controller/fake_models'

class ViewRenderTest < Test::Unit::TestCase
  def setup
    @assigns = { :secret => 'in the sauce' }
    @view = ActionView::Base.new([FIXTURE_LOAD_PATH], @assigns)
  end

  def test_render_file
    assert_equal "Hello world!", @view.render("test/hello_world.erb")
  end

  def test_render_file_not_using_full_path
    assert_equal "Hello world!", @view.render(:file => "test/hello_world.erb")
  end

  def test_render_file_without_specific_extension
    assert_equal "Hello world!", @view.render("test/hello_world")
  end

  def test_render_file_with_full_path
    template_path = File.join(File.dirname(__FILE__), '../fixtures/test/hello_world.erb')
    assert_equal "Hello world!", @view.render(:file => template_path)
  end

  def test_render_file_with_instance_variables
    assert_equal "The secret is in the sauce\n", @view.render("test/render_file_with_ivar.erb")
  end

  def test_render_file_with_locals
    locals = { :secret => 'in the sauce' }
    assert_equal "The secret is in the sauce\n", @view.render("test/render_file_with_locals.erb", locals)
  end

  def test_render_file_not_using_full_path_with_dot_in_path
    assert_equal "The secret is in the sauce\n", @view.render("test/dot.directory/render_file_with_ivar")
  end

  def test_render_update
    # TODO: You should not have to stub out template because template is self!
    @view.instance_variable_set(:@template, @view)
    assert_equal 'alert("Hello, World!");', @view.render(:update) { |page| page.alert('Hello, World!') }
  end

  def test_render_partial
    assert_equal "only partial", @view.render(:partial => "test/partial_only")
  end

  def test_render_partial_with_errors
    assert_raise(ActionView::TemplateError) { @view.render(:partial => "test/raise") }
  end

  def test_render_partial_collection
    assert_equal "Hello: davidHello: mary", @view.render(:partial => "test/customer", :collection => [ Customer.new("david"), Customer.new("mary") ])
  end
  
  def test_render_partial_collection_as
    assert_equal "david david davidmary mary mary", 
      @view.render(:partial => "test/customer_with_var", :collection => [ Customer.new("david"), Customer.new("mary") ], :as => :customer)
  end
  
  def test_render_partial_collection_without_as
    assert_equal "local_inspector,local_inspector_counter,object", 
      @view.render(:partial => "test/local_inspector", :collection => [ Customer.new("mary") ])
  end

  # TODO: The reason for this test is unclear, improve documentation
  def test_render_partial_and_fallback_to_layout
    assert_equal "Before (Josh)\n\nAfter", @view.render(:partial => "test/layout_for_partial", :locals => { :name => "Josh" })
  end

  # TODO: The reason for this test is unclear, improve documentation
  def test_render_js_partial_and_fallback_to_erb_layout
    @view.template_format = :js
    assert_equal "Before (Josh)\n\nAfter", @view.render(:partial => "test/layout_for_partial", :locals => { :name => "Josh" })
  end

  # TODO: The reason for this test is unclear, improve documentation
  def test_render_missing_xml_partial_and_raise_missing_template
    @view.template_format = :xml
    assert_raise(ActionView::MissingTemplate) { @view.render(:partial => "test/layout_for_partial") }
  end

  def test_render_inline
    assert_equal "Hello, World!", @view.render(:inline => "Hello, World!")
  end

  def test_render_inline_with_locals
    assert_equal "Hello, Josh!", @view.render(:inline => "Hello, <%= name %>!", :locals => { :name => "Josh" })
  end

  def test_render_fallbacks_to_erb_for_unknown_types
    assert_equal "Hello, World!", @view.render(:inline => "Hello, World!", :type => :foo)
  end

  class CustomHandler < ActionView::TemplateHandler
    def render(template)
      [template.source, template.locals].inspect
    end
  end

  def test_render_inline_with_custom_type
    ActionView::Template.register_template_handler :foo, CustomHandler
    assert_equal '["Hello, World!", {}]', @view.render(:inline => "Hello, World!", :type => :foo)
  end

  def test_render_inline_with_locals_and_custom_type
    ActionView::Template.register_template_handler :foo, CustomHandler
    assert_equal '["Hello, <%= name %>!", {:name=>"Josh"}]', @view.render(:inline => "Hello, <%= name %>!", :locals => { :name => "Josh" }, :type => :foo)
  end

  class CompilableCustomHandler < ActionView::TemplateHandler
    include ActionView::TemplateHandlers::Compilable

    def compile(template)
      "@output_buffer = ''\n" +
        "@output_buffer << 'locals: #{template.locals.inspect}, '\n" +
        "@output_buffer << 'source: #{template.source.inspect}'\n"
    end
  end

  def test_render_inline_with_compilable_custom_type
    ActionView::Template.register_template_handler :foo, CompilableCustomHandler
    assert_equal 'locals: {}, source: "Hello, World!"', @view.render(:inline => "Hello, World!", :type => :foo)
  end

  def test_render_inline_with_locals_and_compilable_custom_type
    ActionView::Template.register_template_handler :foo, CompilableCustomHandler
    assert_equal 'locals: {:name=>"Josh"}, source: "Hello, <%= name %>!"', @view.render(:inline => "Hello, <%= name %>!", :locals => { :name => "Josh" }, :type => :foo)
  end
end